A heavy-duty AGV transfer vehicle

Abstract

This invention belongs to the field of material handling equipment technology and discloses a heavy-duty AGV transfer vehicle, including a vehicle body, a support unit, a traveling unit, a drive unit, and a control unit. A clearance groove is recessed on the top of the vehicle body. The support unit is located on the top of the vehicle body and has a receiving portion extending along the length of the vehicle body and two overlapping portions located at both ends of the receiving portion, the overlapping portions being bent and connected to the receiving portion. The vertical height of the two overlapping portions is the same and greater than the vertical height of the receiving portion. The receiving portion has a clearance state embedded in the clearance groove and an initial bearing state partially extending out of the clearance groove. In the clearance state, the two overlapping portions press against the vehicle body on both sides of the clearance groove. The traveling unit is located at the bottom of the vehicle body, and two drive units are both located on the vehicle body, with each drive unit corresponding to one of the two overlapping portions for transmission. The control unit is located on the vehicle body and is communicatively connected to both the drive unit and the traveling unit, effectively reducing the vertical height of the heavy-duty AGV transfer vehicle and preventing obstruction of its passage.

Description

Technical Field

[0001] This invention relates to the field of material handling equipment technology, and in particular to a heavy-duty AGV transfer vehicle. Background Technology

[0002] Heavy-duty AGV transport vehicles are important automated handling equipment in the fields of intelligent manufacturing and industrial warehousing. They are mainly used for fixed-point transfer and assembly line connection operations of heavy-duty materials, tooling plates, and complete sets of equipment in workshops. They can effectively replace manual handling, improve the automation level and operational efficiency of logistics transfer in the factory area, and are widely used in workpiece transfer operations in fields such as engineering machinery and automobile manufacturing.

[0003] In existing technologies, most heavy-duty AGV transport vehicles consist of a vehicle body, a lifting mechanism, and a cargo pallet. The vehicle body is used for mobile transportation, and the lifting mechanism is mounted on the vehicle body, with its output end connected to the cargo pallet for vertical lifting. However, in these types of heavy-duty AGV transport vehicles, the lifting mechanism and cargo pallet are usually stacked vertically on the vehicle body, which easily results in a large vertical height and overall volume of the transport vehicle. This restricts the transport vehicle's passage, makes it unsuitable for low-profile, concealed operations, and has poor site adaptability. Summary of the Invention

[0004] The purpose of this invention is to provide a heavy-duty AGV transfer vehicle that can effectively reduce the vertical height and overall volume of the heavy-duty AGV transfer vehicle, avoid obstruction of its passage, and improve the site adaptability of the heavy-duty AGV transfer vehicle.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A heavy-duty AGV transfer vehicle is provided, comprising: The vehicle body has a downward-recessed clearance groove on its top. A support unit is vertically movably disposed on the top of the vehicle body. The support unit is provided with a receiving part and two overlapping parts. The receiving part extends along the length direction of the vehicle body. The two overlapping parts are disposed at both ends of the receiving part and are bent and connected to the receiving part. The vertical height of the two overlapping parts is the same and greater than the vertical height of the receiving part. The receiving part has a clearance state embedded in the clearance groove and an initial bearing state partially extending out of the clearance groove. In the clearance state, the two overlapping parts are respectively pressed against the top of the vehicle body on both sides of the clearance groove. The receiving part is configured to support cargo. A walking unit is disposed at the bottom of the vehicle body, and the walking unit is used to drive the vehicle body to move. There are two drive units, both of which are located on the vehicle body. The two drive units are connected to the two overlapping parts of the support unit in a one-to-one transmission connection. The drive units are used to drive the support unit to move vertically so that the supporting parts switch between the initial bearing state and the avoidance state. The control unit is located on the vehicle body and is communicatively connected to both the drive units and the walking unit.

[0006] Optionally, the support unit includes two support members and two supporting members. The two support members are spaced apart along the width direction of the vehicle body. Each support member is provided with a receiving part and two overlapping parts. Any drive unit is drivenly connected to the two overlapping parts on the same side of the clearance groove. The two support members are spaced apart along the length of the vehicle body, and both ends of each support member are connected to the receiving parts of the two support members respectively. The support members are located in the clearance groove.

[0007] Optionally, the receiving part includes a carrying section and two connecting sections. The two connecting sections are respectively disposed at both ends of the carrying section and are connected to the carrying section. The ends of the two connecting sections opposite to the carrying section are respectively connected to the two overlapping parts. The carrying section extends horizontally and is located at the bottom of the clearance groove. The support member is connected to the carrying section. The carrying section is configured to support goods. The two connecting sections extend upward at an angle in the direction opposite to the carrying section and are respectively abutted against the groove walls on both sides of the clearance groove.

[0008] Optionally, the connection between the connecting segment and the overlapping portion, as well as the connection between the connecting segment and the load-bearing segment, are all connected by a circular arc transition.

[0009] Optionally, the cross-sectional area of ​​the carrying section is larger than the cross-sectional area of ​​the overlapping portion, and the cross-sectional area of ​​the connecting section gradually decreases along the direction from the carrying section to the overlapping portion.

[0010] Optionally, the drive unit includes two drive components disposed on both sides of the avoidance groove. Each drive component includes a drive mechanism and a transmission frame. The housing of the drive mechanism is disposed on the inner top wall of the vehicle body. The output end of the drive mechanism faces the bottom of the vehicle body and is connected to the transmission frame. The output end of the drive mechanism can extend and retract relative to its housing to drive the transmission frame to rise and fall vertically. A through slot is provided on the top of the vehicle body. In the initial bearing state, the upper end of the transmission frame extends out of the through slot, and the overlapping part presses against the transmission frame. In the avoidance state, the transmission frame is housed in the through slot, and its upper end surface is flush with the top surface of the vehicle body.

[0011] Optionally, the transmission frame includes a transmission rod, a connecting rod, and a push rod connected in sequence. The transmission rod and the push rod both extend along the width direction of the vehicle body, and the connecting rod extends vertically. The transmission rod, the connecting rod, and the push rod enclose a telescopic working space. The drive mechanism is located within the telescopic working space, and the output end of the drive mechanism is connected to the transmission rod. The push rod and the connecting rod can extend out of the through slot so that the push rod vertically supports the overlapping part.

[0012] Optionally, the side of the overlapping portion facing the vehicle body is provided with a locking groove, and the push rod can be locked in the locking groove.

[0013] Optionally, the clearance groove is centrally located on the top of the vehicle body along the length of the vehicle body.

[0014] Optionally, the walking unit includes multiple industrial steering wheels.

[0015] The beneficial effects of this invention are: This invention provides a heavy-duty AGV transfer vehicle, including a vehicle body, a support unit, a traveling unit, a drive unit, and a control unit. When goods need to be transported, the support part is initially in an initial bearing state. At this time, part of the support part extends out of the clearance groove. Then, the goods are placed on the support part, and the control unit controls the traveling unit to drive the vehicle body to move, thereby realizing the transport of goods. Since only part of the support part extends out of the clearance groove, part of the support part is still located in the clearance groove, which can reduce the overall vertical height of the transfer vehicle and the goods. Therefore, the goods placed on the support part are also located in the clearance groove. During the transport of goods, when low-level, concealed operations are required, the control unit can control two drive units to start simultaneously. The two drive units drive two overlapping parts to move vertically, so that the support part switches from the initial bearing state to the clearance state, that is, the support part moves downward and close to the clearance groove, so that the support part is embedded in the clearance groove, and the overlapping part presses against the top of the vehicle body, thereby further reducing the height of the goods and ensuring that the heavy-duty AGV transfer vehicle can carry goods through low-level workstations.

[0016] By incorporating clearance grooves on the top of the vehicle body, the receiving portion of the support unit can be embedded within these grooves. This provides installation space for the support unit, preventing it from protruding from the vehicle's upper surface and optimizing its spatial layout. It fully utilizes the vehicle's internal space, effectively reducing the vertical height and overall volume of the heavy-duty AGV transport vehicle when handling goods. This solves the problems of existing equipment being thick, bulky, and requiring ample passage space, allowing the heavy-duty AGV transport vehicle to adapt to low-profile, concealed operating environments and improving its site adaptability. Furthermore, with part of the receiving portion located within the clearance groove, the goods are supported during transport, meaning the lower end of the goods is positioned within the groove. This lowers the center of gravity of the goods and the support unit, improving the stability of the vehicle during transport. Additionally, the clearance grooves provide a limiting effect on the receiving portion of the support unit, preventing slippage during transport. The structure is simple and reliable, significantly improving operational safety and site adaptability. Attached Figure Description

[0017] Figure 1 This is a first view of the heavy-duty AGV transfer vehicle provided in an embodiment of the present invention; Figure 2 This is a second view of the heavy-duty AGV transfer vehicle provided in an embodiment of the present invention; Figure 3 This is a first cross-sectional view of the heavy-duty AGV transfer vehicle provided in an embodiment of the present invention; Figure 4 This is a second cross-sectional view of the heavy-duty AGV transport vehicle provided in an embodiment of the present invention.

[0018] In the picture: 1. Vehicle body; 11. Clearance recess; 2. Support unit; 21. Supporting component; 211. Receiving part; 2111. Load-bearing section; 2112. Connecting section; 212. Overlapping part; 22. Supporting component; 3. Drive unit; 31. Drive mechanism; 32. Transmission frame; 321. Transmission rod; 322. Connecting rod; 323. Push rod; 4. Walking unit; 5. Extendable working space. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0023] This embodiment provides a heavy-duty AGV transfer vehicle, such as Figures 1 to 4 As shown, this can effectively reduce the vertical height and overall volume of heavy-duty AGV transfer vehicles, prevent their passage from being obstructed, and improve the site adaptability of heavy-duty AGV transfer vehicles.

[0024] like Figure 1 and Figure 2As shown, the heavy-duty AGV transfer vehicle includes a vehicle body 1, a support unit 2, a traveling unit 4, a drive unit 3, and a control unit (not shown in the figure). The top of the vehicle body 1 has a recessed clearance groove 11. The support unit 2 is vertically movably mounted on the top of the vehicle body 1, and includes a receiving portion 211 and two overlapping portions 212. The receiving portion 211 extends along the length of the vehicle body 1 and is configured to support goods. The two overlapping portions 212 are located at both ends of the receiving portion 211 and are bent and connected to it. The two overlapping portions 212 have the same vertical height, which is greater than the vertical height of the receiving portion 211. Therefore, the receiving portion 211 is located in the middle and is recessed downwards. The receiving part 211 has a clearance state embedded in the clearance groove 11 and an initial bearing state partially extending out of the clearance groove 11. In the clearance state, the two overlapping parts 212 are respectively pressed against the top of the vehicle body 1 on both sides of the clearance groove 11. The traveling unit 4 is located at the bottom of the vehicle body 1 and is used to drive the vehicle body 1 to move. There are two drive units 3, both of which are located on the vehicle body 1. The two drive units 3 are connected to the two overlapping parts 212 of the supporting unit 2 in a one-to-one transmission connection. The drive units 3 are used to drive the supporting unit 2 to move vertically, so that the receiving part 211 switches between the initial bearing state and the clearance state. The control unit is located on the vehicle body 1 and is communicatively connected to both the drive unit 3 and the traveling unit 4.

[0025] When goods need to be transported, the receiving part 211 is initially in the initial bearing state. At this time, part of the receiving part 211 extends out of the clearance groove 11. Then, the goods are placed on the receiving part 211, and the control unit controls the walking unit 4 to move the vehicle body 1, thereby realizing the transport of goods. Since only part of the receiving part 211 extends out of the clearance groove 11, part of the receiving part 211 is still located within the clearance groove 11. Therefore, the goods placed on the receiving part 211 are also located within the clearance groove 11, which can reduce the overall vertical height of the transfer vehicle and the goods, thus facilitating the transport of goods. During the process, when it is necessary to carry out low-profile, concealed operations, the two drive units 3 can be started simultaneously by the control unit. The two drive units 3 drive the two overlapping parts 212 to move vertically, so that the receiving part 211 switches from the initial bearing state to the avoidance state, that is, the receiving part 211 moves downward and approaches the avoidance groove 11, so that the receiving part 211 is embedded in the avoidance groove 11, and the overlapping part 212 is pressed on the top of the vehicle body 1, thereby further reducing the height of the goods and ensuring that the heavy-duty AGV transfer vehicle carries the goods through the low-profile work station.

[0026] By providing a clearance groove 11 on the top of the vehicle body 1, the receiving part 211 of the supporting unit 2 can be embedded in the clearance groove 11. On the one hand, this provides installation space for the supporting unit 2, preventing the supporting unit 2 from protruding from the upper surface of the vehicle body 1, optimizing the spatial layout of the supporting unit 2 on the top of the vehicle body 1, making full use of the internal space of the vehicle body 1, effectively reducing the vertical height and overall volume of the heavy-duty AGV transfer vehicle when transporting goods, solving the problems of large thickness, bulky size, and high passage space requirements of existing equipment, making the heavy-duty AGV transfer vehicle adaptable to the low-profile, concealed working environment, and improving the site adaptability of the heavy-duty AGV transfer vehicle; on the other hand, with part of the receiving part 211 located in the clearance groove 11, when transporting goods, the goods are supported by the receiving part 211, that is, the lower end of the goods can be located in the clearance groove 11, so that the center of gravity of the goods and the supporting unit 2 sinks, which helps to improve the stability of the vehicle body 1 when moving goods. In addition, the clearance groove 11 can limit the receiving part 211 of the support unit 2, preventing the support unit 2 from slipping during the transfer of goods. The structure is simple and reliable, and the operational safety and site adaptability are significantly improved.

[0027] Optionally, the walking unit 4 includes multiple industrial steering wheels, and the control unit includes a PLC controller.

[0028] For example, four industrial steering wheels are provided.

[0029] In this embodiment, the clearance groove 11 is centrally located at the top of the vehicle body 1 along the length direction of the vehicle body 1. The receiving part 211 of the supporting unit 2 is embedded in the clearance groove 11, and the two overlapping parts 212 are located on both sides of the clearance groove 11. The receiving part 211 is used to carry the cargo, which can make the load on both sides of the supporting unit 2 symmetrically distributed, improve the positioning stability of the supporting unit 2, and make the cargo load evenly spread from the center of the vehicle body 1 to both sides, so that the vehicle body 1 is subjected to balanced force and prevents local stress concentration from causing deformation.

[0030] Optionally, such as Figure 1 and Figure 2As shown, the support unit 2 includes two support members 21 and two support members 22. The two support members 21 are spaced apart along the width direction of the vehicle body 1. Each support member 21 is provided with a receiving part 211 and two overlapping parts 212. Each drive unit 3 is drivenly connected to the two overlapping parts 212 on the same side of the clearance groove 11. It is known that the receiving part 211 is located inside the clearance groove 11. Therefore, the two overlapping parts 212 of each support member 21 are respectively provided on both sides of the clearance groove 11 along the length direction of the vehicle body 1. That is, two overlapping parts 212 are spaced apart on each side of the clearance groove 11, and the two overlapping parts 212 on the same side of the clearance groove 11 are drivenly connected to the same drive unit 3. The two support members 22 are spaced apart along the length direction of the vehicle body 1, and the two ends of each support member 22 are respectively connected to the receiving parts 211 of the two support members 21. The support members 22 are located inside the clearance groove 11.

[0031] When the cargo height needs to be lowered, the control unit controls the two drive units 3 to simultaneously move the overlapping portions 212 on both sides of the clearance groove 11 vertically downwards. This causes the supporting unit 2 to move the cargo vertically downwards, thereby adjusting the cargo height. This allows the heavy-duty AGV to transport cargo through low-ceilinged workstations, giving the vehicle strong site adaptability. Furthermore, as mentioned above, the two supporting members 21 and two supporting members 22 are connected in an I-shape for transporting cargo. This not only reduces the weight of the supporting unit 2 and the energy consumption of the drive unit 3, but also forms a closed-loop force-bearing frame, improving the bending and torsional resistance of the supporting unit 2 and ensuring stable support for the cargo.

[0032] Optionally, such as Figure 1 and Figure 3 As shown, the receiving part 211 includes a carrying section 2111 and two connecting sections 2112. The two connecting sections 2112 are located at both ends of the carrying section 2111 and are connected to it. The ends of the two connecting sections 2112 facing away from the carrying section 2111 are respectively connected to two overlapping portions 212. The carrying section 2111 extends horizontally and is located at the bottom of the clearance groove 11. The support member 22 is connected to the carrying section 2111, and the carrying section 2111 is configured to support goods. Both connecting sections 2112 extend upward at an angle away from the load section 2111 and fit against the side walls of the clearance groove 11. Thus, the side walls of the clearance groove 11 extend upward at an angle, and the connecting sections 2112 and the side walls of the clearance groove 11 work together to decompose the vertical load borne by the load section 2111 and transfer it to the side walls of the clearance groove 11, thereby dispersing concentrated stress, buffering the impact load brought by the start and stop of the vehicle body 1, effectively improving the stress state of each component, enhancing the deformation resistance and fatigue resistance of the bearing part 211, and further optimizing the overall load-bearing stability.

[0033] In this embodiment, the cross-sectional area of ​​the load-bearing section 2111 is larger than that of the overlapping section 212. Along the direction from the load-bearing section 2111 to the overlapping section 212, the cross-sectional area of ​​the connecting section 2112 gradually decreases. Therefore, the support member 21 is a box-shaped variable cross-section structure, with the load-bearing section 2111 having the largest cross-sectional area, which meets the bending and compressive resistance requirements of the load, thus providing a stable and effective load-bearing effect. Furthermore, the gradually decreasing cross-sectional area of ​​the connecting section 2112 allows the load to transition smoothly along its length, conforming to the actual force reduction law, avoiding stress concentration caused by abrupt changes in cross-section, effectively dispersing impact loads and alternating loads, improving the support member 21's resistance to deformation, cracking, and fatigue, and extending its service life.

[0034] Optionally, such as Figure 1 and Figure 3 As shown, the connection between the connecting section 2112 and the overlapping part 212, as well as the connection between the connecting section 2112 and the carrying section 2111, are all connected by arc transitions. This avoids stress concentration in the transition area, prevents the support component 21 from breaking and failing, and enhances the overall structural strength of the support component 21. In addition, it also prevents the transition area from being too sharp and scratching the goods and personnel, improving safety performance and preventing damage to the goods.

[0035] Optionally, such as Figure 1 and Figure 3 As shown, the drive unit 3 includes two drive components respectively disposed on both sides of the clearance groove 11. The drive components include a drive mechanism 31 and a transmission frame 32. The housing of the drive mechanism 31 is disposed on the inner top wall of the vehicle body 1. The output end of the drive mechanism 31 faces the bottom of the vehicle body 1 and is connected to the transmission frame 32. The output end of the drive mechanism 31 can extend and retract relative to its housing to drive the transmission frame 32 to rise and fall vertically. A through slot is provided on the top of the vehicle body 1. In the initial bearing state, the upper end of the transmission frame 32 extends out of the through slot, and the overlapping part 212 presses against the transmission frame 32. In the clearance state, the transmission frame 32 is housed in the through slot, and its upper end surface is flush with the top surface of the vehicle body 1.

[0036] When it is necessary to lower the height of the goods, the output end of the drive mechanism 31 is controlled by the control unit to extend downward from the housing of the drive mechanism 31, thereby causing the drive mechanism 31 to drive the transmission frame 32 to move downward. This causes the transmission frame 32 to drive the overlapping part 212 pressed on it to move vertically downward, thereby causing the support unit 2 to drive the goods to move vertically downward until the transmission frame 32 is housed in the through slot and its upper end face is flush with the top surface of the vehicle body 1. At this time, the overlapping part 212 of the support unit 2 will press on the top of the vehicle body 1, thereby realizing the adjustment of the overall height of the heavy-duty AGV transfer vehicle and the goods. This allows the heavy-duty AGV transfer vehicle to transport goods through the low-ceilinged work environment, thus giving the heavy-duty AGV transfer vehicle strong site adaptability.

[0037] For example, the drive mechanism 31 includes a telescopic electric cylinder, a telescopic air cylinder, a telescopic electric rod, etc., and is not limited thereto.

[0038] Optionally, such as Figure 1 , Figure 3 and Figure 4 As shown, the transmission frame 32 includes a transmission rod 321, a connecting rod 322, and a push rod 323 connected in sequence. Both the transmission rod 321 and the push rod 323 extend along the width direction of the vehicle body 1, while the connecting rod 322 extends vertically. The transmission rod 321, connecting rod 322, and push rod 323 enclose a telescopic working space 5, within which the drive mechanism 31 is located. The output end of the drive mechanism 31 is connected to the transmission rod 321, and the push rod 323 and connecting rod 322 can extend through through slots to allow the push rod 323 to vertically support the overlapping portion 212. By setting the transmission rod 321, connecting rod 322, and push rod 323, a telescopic working space 5 is formed to accommodate the drive mechanism 31, ensuring that the telescopic stroke of the output end of the drive mechanism 31 is always within the telescopic working space 5. This avoids additionally increasing the vertical height of the heavy-duty AGV transfer vehicle, ensuring that the heavy-duty AGV transfer vehicle can transport goods through low-ceilinged work environments. In addition, the push rod 323 extending horizontally can support the overlapping part 212, thereby providing support for the overlapping part 212, and can also drive the overlapping part 212 to move vertically.

[0039] Optionally, the overlapping part 212 is provided with a locking groove on the side facing the vehicle body 1, and the push rod 323 can be locked in the locking groove. By setting the locking groove and the push rod 323 to lock in each other, the stability of the transmission connection between the transmission frame 32 and the overlapping part 212 can be enhanced, ensuring that the transmission frame 32 can drive the overlapping part 212 to move vertically, and avoiding the overlapping part 212 from shifting or misaligning, which would cause the connection between the two to fail.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A heavy-duty AGV transfer vehicle, characterized in that, include: The vehicle body (1) has a recessed clearance groove (11) on the top of the vehicle body (1). The support unit (2) is vertically movably disposed on the top of the vehicle body (1). The support unit (2) is provided with a receiving part (211) and two overlapping parts (212). The receiving part (211) extends along the length direction of the vehicle body (1). The two overlapping parts (212) are disposed at both ends of the receiving part (211) and are bent and connected to the receiving part (211). The vertical height of the two overlapping parts (212) is the same and greater than the vertical height of the receiving part (211). The receiving part (211) has a clearance state embedded in the clearance groove (11) and an initial bearing state partially extending out of the clearance groove (11). In the clearance state, the two overlapping parts (212) are respectively pressed on the top of the vehicle body (1) on both sides of the clearance groove (11). The receiving part (211) is configured to support goods. A walking unit (4) is disposed at the bottom of the vehicle body (1), and the walking unit (4) is used to drive the vehicle body (1) to move; There are two drive units (3), both of which are located on the vehicle body (1). The two drive units (3) are connected to the two overlapping parts (212) of the support unit (2) in a one-to-one transmission connection. The drive unit (3) is used to drive the support unit (2) to move vertically so that the supporting part (211) switches between the initial bearing state and the avoidance state. The control unit is located on the vehicle body (1) and is communicatively connected to the drive unit (3) and the walking unit (4).

2. The heavy-duty AGV transfer vehicle according to claim 1, characterized in that, The support unit (2) includes two support members (21) and two support members (22). The two support members (21) are spaced apart along the width direction of the vehicle body (1). Each support member (21) is provided with a receiving part (211) and two overlapping parts (212). Any drive unit (3) is connected to the two overlapping parts (212) on the same side of the clearance groove (11). Two support members (22) are spaced apart along the length of the vehicle body (1), and the two ends of each support member (22) are connected to the receiving part (211) of the two support members (21), and the support member (22) is located in the clearance groove (11).

3. The heavy-duty AGV transfer vehicle according to claim 2, characterized in that, The receiving part (211) includes a carrying section (2111) and two connecting sections (2112). The two connecting sections (2112) are respectively located at both ends of the carrying section (2111) and are connected to the carrying section (2111). The ends of the two connecting sections (2112) away from the carrying section (2111) are respectively connected to the two overlapping parts (212). The carrying section (2111) extends horizontally and is located at the bottom of the relief groove (11). The support member (22) is connected to the carrying section (2111). The carrying section (2111) is configured to support goods. The two connecting sections (2112) extend upward at an angle away from the carrying section (2111) and are respectively attached to the groove walls on both sides of the relief groove (11).

4. The heavy-duty AGV transfer vehicle according to claim 3, characterized in that, The connecting section (2112) and the overlapping part (212), as well as the connecting section (2112) and the carrying section (2111), are connected by a rounded transition.

5. The heavy-duty AGV transfer vehicle according to claim 3, characterized in that, The cross-sectional area of ​​the carrying section (2111) is larger than that of the overlapping part (212), and the cross-sectional area of ​​the connecting section (2112) gradually decreases along the direction from the carrying section (2111) to the overlapping part (212).

6. The heavy-duty AGV transfer vehicle according to claim 1, characterized in that, The drive unit (3) includes two drive components disposed on both sides of the avoidance groove (11). The drive components include a drive mechanism (31) and a transmission frame (32). The housing of the drive mechanism (31) is disposed on the inner top wall of the vehicle body (1). The output end of the drive mechanism (31) faces the bottom of the vehicle body (1) and is connected to the transmission frame (32) in a transmission manner. The output end of the drive mechanism (31) can extend and retract relative to its housing to drive the transmission frame (32) to rise and fall vertically. The top of the vehicle body (1) is provided with a through slot. In the initial bearing state, the upper end of the transmission frame (32) extends out of the through slot, and the overlapping part (212) presses on the transmission frame (32). In the avoidance state, the transmission frame (32) is housed in the through slot, and its upper end surface is flush with the top surface of the vehicle body (1).

7. The heavy-duty AGV transfer vehicle according to claim 6, characterized in that, The transmission frame (32) includes a transmission rod (321), a connecting rod (322), and a push rod (323) connected in sequence. The transmission rod (321) and the push rod (323) both extend along the width direction of the vehicle body (1), and the connecting rod (322) extends vertically. The transmission rod (321), the connecting rod (322), and the push rod (323) enclose a telescopic working space (5). The drive mechanism (31) is located in the telescopic working space (5). The output end of the drive mechanism (31) is connected to the transmission rod (321). The push rod (323) and the connecting rod (322) can extend out of the through slot so that the push rod (323) vertically supports the overlapping part (212).

8. The heavy-duty AGV transfer vehicle according to claim 7, characterized in that, The overlapping part (212) is provided with a locking groove on the side facing the vehicle body (1), and the push rod (323) can be locked in the locking groove.

9. The heavy-duty AGV transfer vehicle according to any one of claims 1-8, characterized in that, The clearance groove (11) is centrally located on the top of the vehicle body (1) along the length direction of the vehicle body (1).

10. The heavy-duty AGV transfer vehicle according to any one of claims 1-8, characterized in that, The walking unit (4) includes multiple industrial steering wheels.

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